breathing reserve

breath·ing re·serve

the difference between the pulmonary ventilation (that is, the volume of air breathed under ordinary resting conditions) and the maximum breathing capacity.

breath·ing re·serve

(brēdh'ing rē-zĕrv')
The difference between the pulmonary ventilation (i.e., the volume of air breathed under ordinary resting conditions) and the maximum breathing capacity.
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References in periodicals archive ?
This would be equivalent to a breathing reserve of less than 30% (in other words, the subject is breathing at more than 70% of his/her MVV).
E]max may not reveal the true cause of ventilatory limitation because there is often an adequate breathing reserve.
Nourry measured the breathing reserve in trained and untrained children and found, paradoxically, that while trained, sportive participants were breathing at higher lung volumes.